Definition of water equivalent in English:

water equivalent

Pronunciation /ˈwɔːtə(r) ɪˌkwɪvələnt/

noun

  • 1Meteorology
    More fully "snow water equivalent". The amount of precipitation represented by a quantity of snow, sleet, or ice.

  • 2Physics
    rare The amount of water, measured in terms of mass, which requires the same amount of heat as a given body in order to raise its temperature by the same amount.

Origin

Mid 19th century (in an earlier sense). From water + equivalent.